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Finding the Fourth Proportional to 287,465.53, 396,702.45 and 166,676.89

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Solution

The fourth proportional to 287,465.53, 396,702.45 and 166,676.89 is: 230,014.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,465.53 : 396,702.45 = 166,676.89 : x
  2. Step 2: Convert to fraction form
    287,465.53/396,702.45 = 166,676.89/x
  3. Step 3: Cross multiply
    287,465.53x = 396,702.45 × 166,676.89
  4. Step 4: Simplify right side
    287,465.53x = 66,121,128,465.46
  5. Step 5: Solve for x
    x = 66,121,128,465.46/287,465.53
  6. Step 6: Final answer
    x = 230,014.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.